140342141 has 4 divisors (see below), whose sum is σ = 143328192. Its totient is φ = 137356092.

The previous prime is 140342131. The next prime is 140342161. The reversal of 140342141 is 141243041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140342141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492955 + ... + 1493048.

It is an arithmetic number, because the mean of its divisors is an integer number (35832048).

Almost surely, 2^140342141 is an apocalyptic number.

It is an amenable number.

140342141 is a deficient number, since it is larger than the sum of its proper divisors (2986051).

140342141 is an equidigital number, since it uses as much as digits as its factorization.

140342141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986050.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 140342141 is about 11846.6088396638. The cubic root of 140342141 is about 519.6720577704.

Adding to 140342141 its reverse (141243041), we get a palindrome (281585182).

The spelling of 140342141 in words is "one hundred forty million, three hundred forty-two thousand, one hundred forty-one".